Method of protecting type-writing.



s. m.y BtcKFoRLLf METHOD 0E POTEQTING TYPE WRITINGL 'y APPLICATON FlLED'lUNE I9, ISIS. 15244946, Patented/ Oct. 30. 1917.

, the perforatious and impregnates the liber SAMUEL M. BICKFORD, OF LOCK HAVEN, PENNSYLVANIA, ASSIGNOB TG ESTELLE B. BICKFORD, DOING BUSINESS AS INVESTMENT EXCHANGE, OF LOCK HAVEN, IE'ENN- SYLVANIA.

Specification of Letters Patent.

MPatented Oct. 30, 1917.

Application led June 1.9, 191.6li rSerial No. 104,609.

To all whom t may concern.'

Be it known that I, SAMUEL M. BIcKroRD, a citizen of the United States,` residing at Lock Haven, in the county of Clinton and State of Pennsylvania, have invented cer-r tain new and usefulmproveinents in Methods of Protecting Type-Writing; endl do hereby declare the following to be a full,

clear, and exact description of the invenl tion, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relatesto method of pro- .i

draft, or the like used in an ordinary type-` writer with the usual type will produce effeci-s equivalent to and better than protecting apparatuses ordinarily. employed for the purpose of punching, printing or otherwiso designating amounts on such checks, drafts, or the like.

A further' object of the invention is to employ a material having a lacerant surface placed between the paper and platen of the typewriter whereby upon the striking of the type on the paper the said surface lacerate's or perforates the material of thepaper so that the pigment of the ribbon enters into of the paper.

A further object of the invention is to emploi7 such lacci-ant material in such manner that a coloring matter is likewise applied to the back of the paper simultane-l ously with applying the coloring t'o the front of the paper by the ribbon so that the coloring matter enters the perforations and abrasions from both sides of the'paper.

l A further object of the invention is to employ the said material carrying a coloring matter at the back of the paper of a color different from the color of the inked ribbon at the front of the paper whereby a plurality of colors of pigment or "oloring matter enters. the'abraded portions of the paper.

VA further object .of the invention is to employ-the laeerant material at the back of the paper carrying a plurality of colors whereby the color applied to the back of the paper in the abrasione produced by the t will be xvariegatedl .I vViit these .argdotherV objects in jjiew the invention: comprises certain novel features ,of .constructiomcombination and arrangementof parts `aswwill be hereinafter more fully' described and claimed.

In the drawings; s

Figure. l isaconventional view in end elevation of a typewriter platen with a paper carried thereon, and the lacerant material employed in the present invention inserted between the paper and the platen.

F ig. 2 is a View in front elevation of a strip of laceratingmaterial eitherplain4 on` colored. f v

Fig. 3 is a Viewffin. front elevation. of a strip of lacerant material showingiyariegated colors. f

Fig.,4 is afdifferent embodimentshowing a plain, uncoloredlaeerant material covered by a coloredhsheet of transfer material such as carbon paper.

Like characters ko-,refverence designateeor-y responding parts throughout the several vlews'.

The improved method which forms the subject-matter of this application is carried out bythe use of a strip or sheet of material-- having a. lacerating surface which, for convenience and economy may resemble and,

lx1 act,-be a strip or sheet of sand-paper.,

emery-paper, e1nerycloth-or the like, and is shown in the drawing as 10. In its ,simplestform the strip of material is placed between the platen 11 of the typewriter and the sheet of paper 12, so that when the `usual types of the typewriter strike the paper'12 against the lacerant surface the material of the paper is impinged and fractured on lines corresponding to the type letter, so that the pigment of the' ribbon 13 is forced into the interstices and-impregnates' the fiber of the paper. At the same time the breaking up and puncturing of the paper prevents the removal of the pigment deposited from the` vrilohon so that even in its simplest 'form it is. practically impossible to removethe, colering matter and restore the paper to' original condition for the purpose of naising the amount written in by the typewriter.V

As an additional preventive, however, it is desirable to have the lacerative material itself carry a coloring matt/en, either applied directly to the surface of the material or by means of e sheet of carbon paper or the like stretched over the lacerative surface so that the impinging points are forced through land into the fabric of the paper, and Carry a coloring matt-er therewith to impiegnate the paper from the rear. It is further desirable to have the colon of the printingron the oaek of' the paper Y'litl'erent oni theI color of the printing on the front.

As e still fuither protection the suifaee of' the leeerative material may he mede in variegated colors es 'shown at Fig. 3, and

lthis may be by applying carbon paper es shown at le in Fig. fi' to the trent of the laeerative eni'ace either as a complete sheet or in strips, or carbon paper made up in variegated colore, or, as Stated above, the surface of the material itself may heV eolored, either a plain color or variegated.

Whatever the form of lacerative material employed, the surface of the pepere is ruptured, broken, or fractured corresponding to the outline of the letter or figure, and the coloring' upon one or both sides of the paper forced into the intei'stices thus formed, at'

the same time leaving the paper in a roughened condition and colored.

I claim:-

l. The method of protecting typewriting consisting in employing a typewriter emhodying a platen, the usual types and an inked ribbon, inserting material having e.

neeeeee lacerant surface between the platen and the paper to he written upon, end s'ti'ilting the types against the ribben upon the peper so heldia-gainst the lacerative surface.

2. The methodof protecting typewriting consisting in employing a typewriter emhodying a platen, the usual types and an inked ribbon, inserting a lacerant sheet earvrying a transferable coloring material between the paper to be written upon andthe platen, and striking the types` against the inked iihbon uponv the paper so held against the laeerant sheet.

3. The method of protecting typewriting consisting in employing e typewriter embodying e pla-ten, the usual types and an inked ribbon, inserting a lacerent material between the platen end the peper to be Written upon, such material cai-trying a colei dierent from the colei et the inked ribbon and' striking the types against the peper eo held upon the inked ribbon upon the paper so held' upon the material. ln testimony whereof l aiiix my signature 1n presence of twolwitnesees.

emmen ML eiennonn.

lWitneseeet Emmen E. Ceesnnmn, WILMM l?. Pannen.

Copies et" this patent may be entanezt im' ive tents eeen, by eedtevng the Uemeeiener er? Entente, Washington, ZX 

